COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Bell UH-1 Series Helicopters
AIRWORTHINESS DIRECTIVE
For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
AD/UH-1/9 Tail Rotor Grips 8/2000
Applicability: Models UH1A, UH1B, UH1E, UH1F, UH1H, UH1L, and TH1L helicopters with aluminium tail rotor grips P/N 204-011-728-19 installed.
Requirement: Remove the following TR grips from service:
A3-66287 A3-66361 A3-66377 A3-67184
A3-66333 A3-66365 A3-67149 A3-67207
A3-66356 A3-66370 A3-67171
Note: FAA AD 90-03-10 refers.
Compliance: Before further flight after the effective date of this directive.
This Airworthiness Directive becomes effective on 10 August 2000.
Background: This directive is issued to preclude the failure of certain tail rotor blade grips and subsequent loss of control of the helicopter.
David Alan Villiers
Delegate of the Civil Aviation Safety Authority 6 July 2000
The above AD is notified in the Commonwealth of Australia Gazette on 12 July 2000.
Overview
The Civil Aviation Regulations 1998, as amended by the legislative instrument F2006B07537, represent a crucial piece of Australian legislation designed to maintain the highest safety standards within the nation's civil aviation sector. Enacted by the Australian Parliament, these regulations address significant safety concerns by imposing strict requirements on the airworthiness of aircraft, thereby filling a critical gap in ensuring that all air travel adheres to stringent safety benchmarks. The policy objective underpinning these regulations is to protect public safety by preventing aircraft accidents and incidents through rigorous oversight and enforcement of airworthiness directives, such as the one issued for Bell UH-1 Series Helicopters in 2000 to address the risk of tail rotor blade grip failures. This legislative framework is enforced by the Civil Aviation Safety Authority (CASA), which acts as the delegate for the Australian Government in overseeing compliance with these safety mandates.
Scope and Application
The Civil Aviation Regulations 1998, as part of the legislative framework governing aviation safety in Australia, encompass a specific Airworthiness Directive (AD) targeting the Bell UH-1 Series Helicopters. This AD, numbered AD/UH-1/9, applies to models UH1A, UH1B, UH1E, UH1F, UH1H, UH1L, and TH1L helicopters that have aluminium tail rotor grips P/N 204-011-728-19 installed. The directive mandates the removal of certain tail rotor grips from service to prevent potential failure and loss of control of the helicopter. This requirement must be fulfilled before any further flight after the effective date of the directive, which is 10 August 2000. The AD is applicable across the Commonwealth of Australia and is intended to ensure the safety of these specified helicopter models by addressing a critical safety concern identified through the regulatory process. This directive extends the regulatory oversight of the Civil Aviation Safety Authority, ensuring compliance through the stipulated actions and timeframes.
Key Provisions
The main operative sections of this Airworthiness Directive (AD/UH-1/9) pertain to the applicability and the requirements of the directive. According to section 8/2000, the directive applies to specific models of Bell UH-1 Series helicopters that have aluminium tail rotor grips with the part number 204-011-728-19 installed. The directive mandates the removal from service of certain tail rotor blade grips identified by specific serial numbers (section 8/2000). This action is necessary to prevent the failure of these grips and subsequent loss of control of the helicopter, as referenced in the background section.
The obligations imposed by this directive on the parties or entities it governs are clear and specific. Operators of the affected Bell UH-1 Series helicopters must ensure that the identified tail rotor blade grips are removed from service before further flight after the effective date of the directive, which is 10 August 2000. This requirement is intended to address the identified unsafe condition and ensure continued airworthiness and safety of the affected aircraft.
The consequences for non-compliance with this Airworthiness Directive are not explicitly stated in the provided text. However, non-compliance with ADs generally can result in severe consequences, including potential grounding of the aircraft, which could lead to civil or criminal penalties. Under the Civil Aviation Act 1988, violations of ADs can result in significant fines and imprisonment. The exact penalties can vary depending on the severity of the violation and any subsequent safety risks posed by non-compliance. The Civil Aviation Safety Authority (CASA) has the authority to enforce compliance and can take action against operators who fail to adhere to the requirements of the directive.